Ok i thought it should work Like that :
-First There must be An info like:
A Car need to be exported for [Money reward] from LV Transfender to Los Santos/SanFierro.
-Then you find a Ocean docks tuned car at the LV Transfender ( Like at those event in the past where you had to drive tuned cars for money to LS was about 8 month ago or sth )
-When you enter the car you should get a special blip so that the others can see where you are to chase the player who trys to export it.
-And there should be a red blip for the player who want to export it cuz not everyone know where LS/SF Transfender is
- When the car explodes or gets exported there should respawn a new car at any of the transfender in LS/SF or LV just to avoid that everyone camps only at the one transfender where a car spawns
Well and the last thing is the Money you get for it ...
I realy dont know how much you want to set as reward for exporting a car but i guess 200k would be ok ..
I guess it should be scriptable like that ya `?